Cassette



FIG. 1 is a top perspective view of a cassette showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a side elevational view thereof,

FIG. 4 is a horizontal cross section view thereof taken along line 4-4 in FIG. 3; and,

FIG. 5 is a bottom plan view thereof.

The broken lines indicate portions of the article which do not form part of the claim design. 

CLAIM The ornamental design for a cassette, as shown and described. 